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(No Model.) 2 Sheets-Sheet 1. W

E. D. DEBOUTTBVILLE & L. P. 0. M-ALANDIN.

STARTING GEAR FOR GAS ENGINES.

No. 411,644. Patented Sept. 24, 1889.

WITNESSES:

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E. D. DEBOUTTEVILLE 8: L. P. O. MALANDIN. STARTING GEAR FOR GAS ENGINES.

No." 411, 44 Patented Sent. 24, 1889 R E135; V

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UNITED STATES PATENT ()FFICE;

EDOUARD DELAMARE DEBOUTTEVILLE AND LEON PAUL CHARLES MALANDIN, OFFONTAINE-LE-BOURG, FRANCE.

STARTING-GEAR FOR GAS-ENGINES.

SPECIFICATION forming part of Letters Patent No. 411,644, datedSeptember 24, 1889.

Application filed February 4, 1889. Serial No. 298,661. (No model.)Patented in France January 16, 1888, No. 188,161 1 in Italy February 18,1888,110. 28,061; in England February 24, 1888, No. 2,805; in Spain May18, 1888,11'0. 7,946, and in Belgium August 24, 1888, No. 83,003-

To all whom, it may concern:

Be it known that we, EDOUARD DELAMARE DEBOUTTEVILLE, engineer, and DionPAUL CHARLES MALANDIN, mechanician, residing at Fontaine-le-Bourg,canton de Gleres, (Seine- Infrieure,) in the Republic of France, haveinvented Improvements in Starting-Gear for Gas-Engines, (for which wehave obtained Letters Patent in France, No. 188,161, January 16, 1888;Italy, No. 23,061, February 18, 1888; Great Britain, No. 2,805, February24, 1888; Spain,No. 7,946,May 18, 1888; Belgium, No. 83,003, August 24,1888,) of which the following is a specification. I

The difficulty heretofore experienced in starting gas-engines,especially those of considerable power, has proved a serious obstacle tothe general use of these engines in practice. Many special methods havebeen proposed with a view to facilitating the starting of the engines,but have not been found to work satisfactorily.

The present invention has for its object a new system of startingearapplicable to gasengines. This starting-gear is illustrated in thefigures on the annexed drawings, the same letters of referenceindicating corresponding parts in all the figures.

Figure 1 of the accompanying drawings is an elevation partly in section,illustrating starting-gear arranged according to this invention andsuitable for a motor of twentyfive horse-power, working with poor gas,for example. This view shows the admissionvalve box and gas-chamber g.It also repre sents in dotted lines an ignitor J, which is connectedwith the gas-box g by a three-way cock is, connected to a branch h bymeans of a'rubber tube 1'. Fig. 2 is a diagram illustrating the fourperiods or cycles of the engine, with the division for the explosionperiod, special starting division. Fig. 3 is an elevation of thethree-way cook 70, fitted onto the chamber of the ignitorj, which isshown in section in this figure with the two insulated conducting-wires.The cock is, which should be as perpendicular as possible, should notexceed an angle of twenty degrees to work or transformer coil.commutator or switch arrangement.

well. Fig. 4 shows the cock is in section. Fig.

5 isa view, in elevation, of the said cock. Fig.

6 is an end view, in elevation, of the induction Fig. 7 is a plan of aFig. 8 is a view of my improved starting-gear as in dependently appliedto any gas-motor. Fig. 9 represents theworking-cylinder provided with acock.

The motor being at rest, the fly-wheel is turned by hand so as to bringthe connectingrod to the dead-point forward-that is to say, to the point0, Fig. 2. This point is where the explosion takes place when the engineis running. The strength of one man is enough to turn the .fiy-wheel forthe one or two necessary revolutions if the motor does not exceedtwenty-five horse-power. For a motor exceeding this awinch or othersuitable gear may be employed to turn the fiy-wheel. When theconnecting-rod is at the dead-point c, a gas-cock Z, placed on thevalve-box g, Fig. 1, is opened in the ordinary position for starting.Then the three-way cook 75 is opened as indicated in Figs. 1, 3, 4, and5. The flywheel then is turned so as to bring the connecting-rod alittle beyond the angle of ninety degrees-11. a, approximately to thepoint e.- The fly-wheel must be turned slowly in order to give thegaseous mixture time to fill the cylinder. The gas entering at 0, Figs.3 and 4, mixes thoroughly with the air entering at n and penetrates tothe ignition-chamber, and passes on into the working-cylinder of themotor. It must be understood that during this time the vibration of thehammer orcontactmaker of the coil is stopped, so that the spark cannotpass between the two ends of the platinum wire. The three-way cook isnow shut, a small stop m preventing the key Zfrom turning through morethan a quarter-turn. The fiy-Wheel is then turned backward to bring theconnecting-rod in a position corresponding with the point e, a little infront of the position f, Fig. 2. This is done in orderto slightlycompress the 'mixture in the cylinder, thus facilitating ignition andgiv ing a longer stroke to the connecting-rod at starting, and a moreeffective action. The

connecting-rod being at e, a spark is caused pass, as hereinafterexplained. The mixture is thus exploded, and the piston is drivenforward with such energy as to impart to the fly-wheel the Velocitynecessary to start the motor.

I will now describe the starting of the hammer or contact-maker of theinduction-coil when the proper time has arrived for igniting theexplosive mixture. In ordinary coils the terminals 5 and t, Fig. 6,receive the wires coming from the battery, and the upper ter minals a: ycarry the wires which conduct the current to the ignitor. In the newarrangement this is likewise the case; but the terminal s only isconnected to one of the poles of the coil, the terminal tbeing insulatedand an auxiliary terminal a introduced in its place, being connected tothe other pole of the coil, Figs. 6 and 7. The vibrating hammer orcontact-maker having been previously regulated to vibrate immediately onthe passage of the two currents of the battery, this current isinterrupted by means of a contactmaker 2;, which opens the circuit.Then, when the proper moment has arrived for igniting, it is simplynecessary to set this contact-maker c on the terminal a. The current ofthe battery is then transmitted to the second pole of the coil, and thehammer or contact-maker commences to vibrate, establishing the electriccurrent which produces the spark in the ignitor. This simple methed ofstarting is equally applicable to motors worked by town gas or poor gasor petroleumvapor, or, in fact, to any motor worked with explosive gas.

The system of starting hereinbefore described can also be applied togas-motors whose explosion is produced bya gas-jet and,

in general, to all descriptions of gas-motors. This application isillustrated in Fig. 8 of the drawings, a four-cycle motor being selectedfor the sake of illustration. In this particular case the starting isefiected as follows: The apparatus is screwed to the cylinder of themotor or to one of the sides of the compression-chamber. The gas-inletis put in communication with the admission-cock of the gas, ashereinbefore described. The stopcock E and a three-way c'ock B,corresponding to the cock marked it in Figs. 3 and 4, are

opened. The fiy-wheel is turned, as hereinbeordinary way. A stopper Yenables the points of the platinum wires in the ignitor to be ad- 4justed without removing the terminal 5. As a single electric sparksuffices for the explosion in this special case, it is possible so toarrange the coil that the spark is only produced between the platinumpoints for the short period of time sufficient for igniting the gaseousmixture.

It is evident that the construction of the parts hereinbefore describedwith reference to the accompanying drawings may be modified in variousways without departing from the principle of the invention.

In order to start the engine without the exertionnecessary to draw inthe gaseous mixture by hand during a certain part of the stroke and topartially compress this mixture, we fix on the upper part of thecylinder a cock R, placed over the compression-cham ber, as indicated inFig. 9 of the drawings. The system works on the same principle; but theconnecting-rod must be at the point f, Fig. 2that is to say, at' ninetydegrees for starting the motor at any moment. This position is obtainedwhen the motor is stationary either by suitably manipulating the cock Ror by means of a winch or gear acting on the fly-wheel until therequired position is obtained. The starting is then effected as follows:The cock R and the cock I, Fig. 3, are put wide open, and the cock Z,Fig. 1, is then put in the starting position. The incombustible gases inthe interior of the cylinder escape into the open air through the cockB, being expelled by the force with which the gaseous mixture entersthrough the cock Z.

IVhat actually takes place is this: The gas entering under pressurethrough the hole 0, Fig. 4, draws with it, at a 10, atmospheric airentering at n. The cylinder is then quickly cleared of the inert gaseswhich it contained and is filled with an explosive mixture atatmospheric pressure. The cocks R and Z are then closed and the spark iscaused to pass, as hereinbefore set forth. The motor is set in motion bythis force, and the power stored up in the fly-wheel is sufficient toinsure the starting of the largest engines.

We claim as ourinvention- 1. The combination of a gas-engine and anignition-chamber with a connecting-pipe leading from the gas-supply tothe ignition-chamber, the said pipe having a three-way cock, one wayopening to an air-supply passage, as and for the purposes set forth.

2. The combination of a gas-engine and an ignition-chamber, with aconnecting-pipe having a three-way cock opening also to an airsupplypassage, and an electric igniting device, substantially as described,and for the purpose specified.

3. The combination of a starting-gear for gas-engines, consisting of anignition-chamber and a connecting-pipe having a three-way cock with anelectric igniting device, and a circuit-opener or switch in the circuitof the In testimony whereof we have signed our induction-coil, as andfor the purposes specinames to this specification in the presence of 10fied. two subscribing witnesses.

at. A starting-gear for gasengines, eonsist- EDOUARD DELAMAREDEBOUTTEVILLE. 5 ing of a three-Way cock, air and gas supplies LEON PAULCHARLES MALANDIN,

communicating therewith, an ignitor, and a Witnesses: stop-cook betweenthe ignitor and the oylin- ADRIEN MAZE, der, substantially as set forth.Ll'loN MAZE. v

